mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 1102

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

DIW2EN—Development Port Instruction Watchpoint Trap Enable 2
This is a read-only bit.
DIW3EN—Development Port Instruction Watchpoint Trap Enable 3
This is a read-only bit.
IFM—Ignore First Match Only for Instruction Breakpoints
ISCT_SER—Instruction Fetch Show Cycle and Core Serialize Control
This field defines one of several performance versus visibility options for core behavior. 111
is the preferred encoding for normal operation. Changing the instruction show cycle
programming starts to take effect only from the second instruction after the actual mtspr
instruction to ICTRL.
For more information, see Section 20.2.2 Controlling Instruction Fetch Show Cycles.
0 = Trap disabled (reset value).
1 = Trap enabled.
0 = Trap disabled (reset value).
1 = Trap enabled.
0 = Do not ignore first match. Used for “Go To x” (reset value).
1 = Ignore first match. Used for “Continue”.
000 = Core is fully serialized and show cycle will be performed for all fetched
001 = Core is fully serialized and show cycle will be performed for all changes in the
010 = Core is fully serialized and show cycle will be performed for all indirect changes
011 = Core is fully serialized and no show cycles will be performed for fetched
100 = Illegal.
101 = Core is not serialized (normal mode) and show cycle will be performed for all
110 = Core is not serialized (normal mode) and show cycle will be performed for all
111 = Core is not serialized (normal mode) and no show cycles will be performed for
instructions (reset value). Has a reset value of 0x00000000.
program flow.
in the program flow.
instructions.
changes in the program flow. If the fetch of the target of a direct branch is aborted
by the core, the target is not always visible on the external pins. This does not
affect program trace.
indirect changes in the program flow.
fetched instructions.
Freescale Semiconductor, Inc.
For More Information On This Product,
MPC823 REFERENCE MANUAL
Go to: www.freescale.com
Development Capabilities and Interface
20-47